baber/WOPTO huggingface dataset:
Patent GB-1231450-A (GB)
IPC: F01D5/32
Filed: 1968-12-16
Abstract: 1,231,450. Cooling gas turbine rotors. GENERAL ELECTRIC CO. Dec.16, 1968 [Dec. 21, 1967], No. 59607/68. Headings F1G and F1T. In a gas turbine rotor wherein the blades are mounted on the rotor disc 2 by engagement of their roots 6 in axial dovetail grooves defined between projections 4 on the disc, a space 10 forming a coolant chamber is defined between the base of each root 6 and the bottom of the respective mounting groove, each chamber 10 communicating with passages 14 in the appropriate blade. Each of the chambers is closed off at one end by a seal plate 16 located at its radially inner edge in a circumferential groove 18 and bearing at its outer edge against a flange 20 on a cover-plate 12a. The latter has a dovetail portion retaining it in the blade mounting groove and a projection 120 to provide a flush surface with the disc 2 at one end of the chamber 10. A further cover-plate 12 is mounted at the other end of chamber 10 and has a shoulder 26 locating a cup shaped coolant guide plate 22 which defines an annular coolant chamber with the disc 2. Coolant air supplied from the engine compressor to the annular chamber thus flows below cover-plates 12 to chambers 10 and thence into passages 14 in the blades. The guide plate 22 is of a resilient material and is arranged so as to be biased axially against the side of the disc 2 in the region of shoulders 26 and radially under centrifugal action against the shoulders 26 to effect a seal with the disc 2 and cover-plates 12 respectively. It is arranged that the sealing surfaces between guide plate 22 and cover-plate shoulders 26, between sealing plates 16 and coverplate shoulders 20 and between the lowermost blade dovetail 28 and its mounting groove are all at substantially the same radius, as shown shaded in Fig.6. In a modificatication, Fig. 7 (not shown), a spacer (30) is positioned between successive rotor discs 2 and the cup shaped guide plate 22 is replaced by a frusto-conical plate (22) which bears against an inclined surface (32) on the spacer (30).
Patent GB-1233923-A (GB)
IPC: F28F13/02
Filed: 1968-08-23
Abstract: 1,233,923. Refrigerant evaporators; tubular heat exchange elements. DANFOSS A.S. 23 Aug., 1968 [6 Sept., 1967], No. 40467/68. Headings F4H and F4S. The two interior walls of a refrigerant evaporator of annular cross-section are provided with thermally conducting gauze linings 21, 22, which, together with the evaporator walls, form capillary systems for retaining liquid refrigerant while permitting unimpeded flow of refrigerant vapour through the major part of the crosssection of the evaporator. The evaporator cools water flowing in the path W around the evaporator.
Patent GB-1251756-A (GB)
IPC: G11C11/14
Filed: 1969-02-03
Abstract: 1,251,756. Magnetic laminates. J. S. GASSAWAY. 3 Feb., 1969 [8 Feb., 1968], No. 5656/69. Heading B5N. [Also in Division H1] A magnetic memory member is made by applying a magnetic coating to a rigid master member, e.g. glass or stainless steel, having a surface corresponding to the desired surface of the memory member, bonding the coating to a rigid substrate, e.g. an aluminium disc, and releasing the coating from the master member. A bonding agent and a parting agent may intervene between the coating, and the substrate and master member respectively. The magnetic coating may be an electrolytically or electrolessly deposited metal film e.g. nickel-cobalt alloy, or a dispersion of magnetic powder e.g. iron oxide in a heat-curable epoxy binder, applied by spraying or spin-coating. The parting agent, which may be a vapour-deposited film of silver (250-500 Š thick), nickel or aluminium, or gold foil, may be dispensed with when a lubricant, e.g. carnauba wax or a silicone, is mixed with an iron oxide/epoxy composition. The bonding agent may be an epoxy resin. In one embodiment, an optically flat master member 10 (Fig. 4) is coated with parting agent 12, annular paper mask 14 is placed thereon, and magnetic coating 15 is applied all over. The coating is then hardened by heating at e.g. 90- 125‹ F. for 10-30 minutes, and the masking disc is removed. A bonding agent 17 (Fig. 8) is then applied, and upper and lower master member assemblies 19, 20 are assembled either side of substrate 18 using spacers 21 at the uncoated margin 22 of the master members. The upper and lower assemblies 19, 20 are forced together so that bonding agent 17 is spread over the whole surfaces (Fig. 4). The assembly is heated at e.g. 150-300‹ F. for 10-30 minutes to cure the bonding agent. On cooling, separation occurs at the parting agent/master member bonds, and this separation is aided if the substrate 18 has a higher coefficient of thermal expansion than the master members 10. Removal of parting agent, e.g. by acid dipping, leaves a double-sided magnetic recording disc (Fig. 12). The magnetic layer has a concentration of magnetic particles at its outer surface due to the gravitational settling of the particles towards the master member during production. A similar, but one-sided disc can be made by using only one master member assembly.
Patent GB-1252353-A (GB)
IPC: B65H5/32
Filed: 1969-10-10
Abstract: 1,252,353. Feeding sheets. McCALL CORP. 10 Oct., 1969 [10 Oct., 1968], No. 49970/69. Heading B8R. A method of producing a magazine having a loose insert therein comprises the steps of progressively gathering a plurality of signatures S in overlapping relation along a saddle 15 so that the signature leaves depend downwardly on each side of the saddle, raising a portion of the depending leaves L on one side of the saddle to form an inverted V-shaped separation 120 between adjacent leaves, and feeding an insert upwardly into each said separation while the overlapping signatures are supported by the saddle. In apparatus for carrying out the method, a wire 115 is extended from the signature gathering unit (10) to the stitching unit (25) of a conventional saddle-stitch book binding machine for the purpose of forming the separation 120, and an insert feeding unit (35) is positioned adjacent the stitching unit (Fig. 1, not shown). The feeding unit includes a hopper (40) from which the inserts are fed into the V-shaped separation 120 by means of an arrangement including a suction member (60) which brings successive inserts into the path of a projecting finger (53) formed on a rotating wheel (48) co-operating with an endless belt (75) which delivers each insert to further conveyers (90), (100) for upward insertion into the V-shaped space 120 (Fig. 2, not shown).
Patent GB-1256642-A (GB)
IPC: G08B13/04
Filed: 1969-03-21
Abstract: 1,256,642. Nuclear powered electrical energy source. GENERAL ALARM CORP. March 21, 1969 [March 27, 1968], No. 14204/71. Divided out of 1, 256, 641. Heading G1A. An electrical energy source comprises a source of nuclear energy and a photo-voltaic substance with a phosphor sandwiched between them to convert incident nuclear radiation from the source into light energy to which the photo-voltaic substance can respond. The arrangement is used to supply energy to a pair of transparent burglar alarm electrodes in the glass of a window and may comprise a layer of Americium in a dielectric plastics binder coated with a zinc sulphide phospor in turn covered by a silicon photo-voltaic strip.
Patent GB-1256657-A (GB)
IPC: A47C31/11
Filed: 1970-08-18
Abstract: 1,256,657. Seat covers. MUSTANG-DRYAD Ltd. Aug. 18, 1970, No.39767/70. Heading A4M. A flexible cover 2 is secured to a seat 3, 4 by elasticated and/or adjustable straps 5, 5<SP>1</SP>, 5<SP>2</SP> each provide at its ends with a spring clip 7, the straps being passed around the seat and clipped at their ends on to the margins of the cover 2. The straps may include a sliding clasp 6 for adjusting a looped portion, and hence the length, of the strap. The cover 2 may be of sheepskin, fur or pile material and may be backed with foamed plastics or rubber.
Patent GB-1297945-A (GB)
IPC: A01F25/20
Filed: 1969-03-19
Abstract: 1297945 Screw conveyers NATIONAL RESEARCH DEVELOPMENT CORP 10 March 1970 [19 March 1969] 14310/69 Heading B8A A screw conveyer comprises two helicallyflighted tubes 9, 10 mounted by means of bearings 4, 5, 7, 8, on a hollow shaft of which parts la, 1b are jointed by a solid member 6. The tubes 9, 10 are coupled by bevel gears 13, 14 which are surrounded by a guard plate 15 and a gaiter 17. The gap between the inner ends of flight portions 30 is bridged by a flexible member 22 and the free end of the tube 9 is sealed by a cap 12. At this capped end the flight has a cutter 50. The flight-tube 10 is driven by a sprocket 21. In a modification, Figs. 2, 4, two screw conveyers are mounted side-by-side on a traversing unit 25, 28 provided on a tractor 31. A spring- loaded plate 34 confines material between the conveyers and a trough 38 having a spring- loaded lip 40 supports the material as it is conveyed towards a take-off conveyer 41. In Fig. 2, material is cut and conveyed from a stack of stillage 32.
Patent GB-1303249-A (GB)
IPC: A47L13/22
Filed: 1969-08-14
Abstract: 1303249 Reservoir cleaning implements O BOIARDINI 13 Aug 1970 [14 Aug 1969] 40744/69 Heading A4K A cleaning implement especially for cleaning a bath comprises a pad of foam plastics material 1a sandwiched between two outer layers of flexible scouring material 1b and a hollow handle 2 one end of which is closed by a plug (3), Fig. 1 (not shown) the other end of which terminates within the pad and has an opening into the interior of the pad. Cleaning liquid is stored in the hollow handle. The scouring material may be felted or spun synthetic fibrous material impregnated with silicon carbide, aluminium oxide or garnet.
Patent GB-1313993-A (GB)
Title: Electric terminals
IPC: H01R4/24
Filed: 1971-01-12
Abstract: 1313993 Terminals RELIABLE ELECTRIC CO 12 Jan 1971 1370/71 Heading H2E A terminal comprises a flat body 10 of resilient metal, notch 11 and narrow slot 13, the intersection of the slot and notch providing sharp corners that penetrate and slice insulation from a wire as it is forced into slot 13. An aperture 12 may be provided. The slot is formed by a shearing or slitting operation, after which portions are prestressed at 15 forcing arms 14 apart. The notch may have edges that are downwardly converging, as shown, or parallel and preferably has a shaped entry portion to facilitate wire insertion. A tool 30 can be provided which is placed over the upper parallel portions of arms 14, the end surfaces 33 of the tool applying pressure to the wire. The tool also limits the deflection of the arms to within their elastic limits. A blade 34 can be provided for cutting the free end of the wire. A further embodiment (Fig. 9, not shown) of the terminal, has arms of reduced width and greater flexibility for more fragile wires. A tab 23 for searing the terminal to a holder, as by wedging, and a portion 22 to permit soldered or wire-wrapped connections can be provided.
Patent GB-1315305-A (GB)
Title: Locking devices
IPC: B60N2/07
Filed: 1969-07-10
Abstract: 1315305 Seat slides TELEFLEX Ltd 1 June 1970 [10 July 1969] 34872/69 Heading A4J [Also in Division E2] A locking device comprises an assembly 12 relatively slidable with respect to a bar 11 extending in the direction of relative sliding, said bar having thereon teeth 13 arranged to form a rack, the assembly comprising mounting means 16 carrying a toothed member 14 for operative engagement with said rack teeth, a toggle linkage 19, 20 and spring biasing means 26 operable on the toggle linkage, said toggle linkage being operatively connected to said toothed member such that when said toggle linkage is moved into a locking condition (in which said toggle linkage is held by said spring biasing means) said toggle linkage shifts said toothed member into engagement with said rack teeth and such that when said toggle linkage is 'broken' against the action of said spring biasing means said toggle linkage shifts said toothed member out of engagement with said rack teeth. In the construction shown the means 16 is a housing and the bar is a side portion of a rail. The assembly 12 is carried by a seat which is slidable on the rail and on a second rail parallel to the first. A second assembly 12 (not shown) is also carried by the seat (not shown) for engagement with the bar 11 and is spaced in the direction of travel. The member 14 is a lever which extends adjacent the bar 11 and its teeth 15 are part of a head which is at one end portion of the lever 14, the lever is mounted at an intermediate position of its length between upper and lower plate of the housing 16 by means of a pin 17 and beyond the pin, the lever is extended to form a tail 18 for operating a switch 33. The toggle linkage consists of two members 19, 20 the member 19 being pivoted to the lever 14 and also to the member 20 and the member 20 being pivoted to the housing 16 the common pivot 21 between the members 19 and 20 is connected to a slidable rod 25 that is surrounded by the compression spring 26, the spring bearing at one end on a washer backed up by a stop in the housing and at the other end on a washer on an eye-piece 24 which is connected to the common pivot pin 21. The spring urges the linkage towards the overcentre position in which the teeth 15 of the head are engaged with the rack teeth. The member 20 is extended to form a release handle 30. To limit the overcentre movement of the linkage a stop 31 is provided between the plates 16. The switch 33 indicates when the lever 14 is engaged with the rack teeth and the two handles 30 of the two assemblies 12 are normally connected together for operation. The lever 14 is shaped so that when the teeth 15 are engaged with the rack teeth it embraces a stop 34 fixed between the housing plates thus if the pin 17 should give way the stop 34 limits movement of the lever 14. The bar 11 is split longitudinally into two parts either of which is capable of taking the full load of the seat.
Patent GB-1316531-A (GB)
Title: Magnetic fastening devices
IPC: H01F7/02
Filed: 1971-11-12
Abstract: 1316531 Roof racks; rear-view mirrors MHE (DONCASTER) Ltd 12 Nov 1971 52570/71 Heading B7J [Also in Divisions F4 and H1 A device for fastening e.g. a lamp, roof rack, bracket or number plate to the body of a vehicle comprises a sheet of ductile material e.g. soft aluminium or mild steel bendable by hand to fit the surface, and a flexible e.g. rubber sheet 2 (Fig. 1), overlapping the same, and a second sheet of ductile material 3 arranged as a sandwich and clamped by bolts and nuts 5; strips 4 of rubber admixed with powdered barium ferrite being adhesively bonded to the underside of sheet 2 and the strips being permanently magnetized. Alternatively (Fig. 4, not shown) the ductile sheet is directly bonded adhesively to the magnetic rubber strips. The device is also applicable to the fixture of a rearview mirror or a radio aerial. The flexible sheet may be of rubber interleaved with double textile material.
Patent GB-1321263-A (GB)
Title: Polymerization of epoxy monomers
IPC: C08G65/22
Filed: 1970-07-02
Abstract: 1321263 Photo-resist processes AMERICAN CAN CO 2 July 1970 32272/70 Heading G2C [Also in Division C3] Photo-resist images are prepared by applying to a substrate a mixture comprising an epoxy compound and an aryl diazonium salt of a halide of Sb, As, Bi, Fe, Sn or P which acts as a latent curing agent which becomes active on exposure to actinic radiation (see Division C3). Predetermined portions of the substrate are screened and the unscreened portions thereof exposed to electromagnetic radiation to effect polymerization of the epoxy compound. After removal of the screening a suitable solvent is applied to remove unpolymerized portions of the mixture. The substrate may be metal, rubber, plastics foam, paper, wood, wire screen, ceramic or glass. Mono- or poly-epoxides are described but the examples are restricted to the use of polyepoxides. In a typical example 97g, of a cresol novolac epoxy resin (60% soln. Ni toluene), 95 ml. aceto-netrile and 2À91g of p-chlorobenzenediazonium hexafluorophosphate were mixed and coated on a steel plate. The plate was exposed, through a photographic negative pattern of crosses, to a carbon arc for 10 minutes at a distance of three feet. The unpolymerized areas were removed by acetone washing and complete curing was achieved by heating for 15 mins. at 180C. The cured resin was unharmed when  the steel plate was etched away with nitric acid. Other examples relate to the preparation of multilith plates.
Patent GB-1321987-A (GB)
Title: Wall units
IPC: F24F3/044
Filed: 1970-05-13
Abstract: 1321987 Panel wall structures O A BECKER 13 May 1970 [13 May 1969 21 May 1969 25 June 1969 22 July 1969 14 Aug 1969 23 Aug 1969 21 Nov 1969] 3598/73 Divided out of 1321985 Headings E1B and E1W The disclosure is the same as that of Specification 1321985 except that the embodiments are restricted to those in which the pressure of the gas in the cavity is below atmospheric pressure. The claims relate to support means in the cavity parallel to the panels and supporting the panels against external pressure. The units being connected to common apparatus for altering the condition of air or gas in the cavities either in addition to or other than by reducing its pressure.
Patent GB-1333916-A (GB)
Title: Pattern recognition devices
IPC: G06V30/182
Filed: 1970-11-18
Abstract: 1333916 Character recognition EMI Ltd 18 Nov 1970 [4 Dec 1969 24 Dec 1969] 59201/69 and 62914/69 Heading G4R An input arrangement for the decision mechanism of a pattern recognition device includes cathode ray tube means responsive to the scanning of a field which may contain patterns to be recognized for detecting the edges of the patterns, and means for representing the edges as a series of substantially circular arcs. The scanner performs two horizontal rasters followed by two vertical rasters, the scanner video being differentiated then thresholded to detect character edges. The edges detected are white to black in the first and third rasters and black to white in the second and fourth, an inverter being switched into circuit after the differentiator in the latter cases. For the horizontal rasters, the thresholder output is inverted, widened, delayed for one scan-line and applied to each of a series of circuit blocks. Occurrence of an output pulse from the thresholder in the next scan line will activate a monostable in a first of the circuit blocks for 1¢ scan-lines and read out X and Y scan-position counters to X and Y accumulators in the block. The X counter read-out is used to define a window in the next scan line and if a thresholder output occurs during this, the monostable is activated again and so on. Each pulse which activates the monostable also increments a counter to give the length of the arc. The X counter read-out is also applied to two differentiating circuits in series, these circuits feeding a gradient accumulator and a curvature accumulator respectively. If the output of the second of these differentiators (curvature), when smoothed, exceeds a threshold, the inputs to the length counter, and X, Y, gradient and curvature accumulators are blocked and these accumulators and counter read out to a computer thus providing it with the parameters for one arc. Read out also occurs if the monostable is allowed to become inactive (end of arc). The thresholder output is applied to all the "circuit blocks" mentioned, in common, but the monostable in a given block can only be activated for the first time (for a given arc) if the monostable in the preceding block in the series is active. Thus respective arcs are dealt with by respective blocks. During the vertical rasters, the roles of the X and Y counters are interchanged, as are those of the X and Y accumulators. Due to the window mentioned, the first raster, for example, detects white to black arc edges with gradients within 45 degrees of the vertical. The computer recognizes the character on the basis of the largest product of probabilities following a classification of arcs into classes for the various possible characters. Recognition is preceded by size and position normalization.
Patent GB-1336104-A (GB)
Title: Suction cleaners
IPC: A47L5/30
Filed: 1972-10-10
Abstract: 1336104 Suction cleaners R G DIXON & CO Ltd 10 Oct 1972 [4 Jan 1972] 288/72 Heading A4F In a suction cleaner including a generally vertical drive shaft carrying a suction fan impeller, the drive shaft 10 rotates a horizontal brush 5 via an intermediate drive member 15 rotatably mounted on a shaft 13 and driven by the shaft 10 with speed reduction, and a beltdrive 17 between the intermediate drive member 15 and the brush 5. A sleeve 12 on the shaft 10 engages a tyre 16 on the member 15 to provide a reduction gear.
Patent GB-1340077-A (GB)
Title: Pick-up tubes
IPC: H01J29/56
Filed: 1970-01-28
Abstract: 1340077 Image pick-up tubes EMI Ltd 15 Jan 1971 [28 Jan 1970] 4036/70 Heading H1D A pick-up tube (e.g. TV camera) includes a mesh electrode with a skirt portion 28 interposed between a wall anode 27 and the target 29 such that the facing ends of the wall anode and of the skirt portion are dissimilar so as to produce a rotationally non-symmetrical lens. Normal beam incidence, without barrel distortion, is produced. The mesh skirt shown has two approximately equal castellations with L = 2 mm. and L<SP>1</SP> = 1 mm. in an example and with steps 7, 8 near the corners of the scanned area. Distortion is improved since for two distinctly different skirt lengths it is possible to have good horizontal geometry and good line direction beam landing, or good vertical geometry and good frame direction beam landing. In alternative embodiments a uniform skirt 5 may be provided with two or four equally spaced castellations produced on the skirt or wall anode by means of conducting tape. Four castellated portions of equal circumferential length may be of two longer and two shorter skirt portions, the former being at the top of the scanned area. In other arrangements the anode and skirt facing edges may be elliptical with non-parallel major axes, or both may be oblong with the longer axes non-parallel. Electrostatic or magnetic focusing and scanning and electrode potentials are instanced.
Patent GB-1344498-A (GB)
Title: Chimney controls
IPC: F23L13/00
Filed: 1971-12-30
Abstract: 1344498 Chimney controls M E CARTER 30 Dec 1971 [9 Jan 1971] 1138/71 Heading F4J A device for controlling the effective size of a chimney mouth comprises a cover 12 mounted on a shaft 13 above the chimney 11, the cover being movable from an open position, as illustrated, to a closed position when it occludes the chimney mouth, by means of a cable 18 attached to the lower end of the shaft 13. The cover is biased into an open position by spring 17 and may be closed, or partially closed by pulling on cable 18. A device for locking the cable, and thereby the cover, in any particular position may be provided at the base of the chimney. In an alternative embodiment the cover is moved by rotation of a cable. In a further embodiment the shaft 13 is supported by two axially spaced sets of springs, each set comprising, for example, three springs extending from the shaft to the wall of the chimney. The springs are arranged such that when the chimney is open they lie horizontally and when the cable 18 is pulled they extend, simultaneously locating the cover and biasing it to the open position.